Automatic cut-off for cisterns



April 15' 1924.

1,490,431 W. A-. PENDERGRAFT AUTOMATIC CUT-OFF 29R CISTERNS Filed July8, 1922 Patented Apr. l5, 1924.

' iii? WILLIAM A. PENDEBGRAFT, OF CARNEY, OKLAHOMA.

AUTOMATIC CUT-OFF FO'B CISTERNS.

Application filed July 8,

To all whom it may concern.

Be it known that I, WILLIAM A. FENDER- GRAFT, a citizen of the UnitedStates, residing at Carney, in the county of Lincoln and State ofOklahoma, have invented a new and useful Automatic Cut-Off for Cisterns,of which the following is a specification.

This invention relates to filters, and more particularly to filters usedin connection with cisterns.

The object of the invention is to provide filter of this character forcatching the first wash from the roof so that nothing but clean purewater passes to the cistern.

Another object is to provide a float controlled supply pipe for thefilter whereby the water fed to the filter will be cut oil" when itreaches a predetermined height therein.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood thatchanges in the preciseembodiment of the invention herein disclosed may be made within thescope of what is claimed without departing from the spirit of theinvention.

In the accompanying drawings Figure 1 represents a side elevation partlyin section of the filter constituting this invent-ion shown applied, and

Fig. 2 is a detail longitudinal section of a portion of the filter.

In theembodiment illustrated, a container 1 is shown preferably in theform of a barrel having a sediment discharge cock 2 at its bottom andclosed at its top. A. pipe 3 leads into said barrel 1 and is de signedto be connected with a down spout leading from an eaves trough so thatwater from the trough is conducted through the pipe into the barrel.

A branch pipe 4 extends laterally from pipe 3 at a point spaced abovethe container 1 and a screen 5 is arrangedover the opening through whichthe branch pipe enters I pipe 1. The branch 4: has a downturneddischarge end 6 which is designed to conduct water to the cistern director to the usual filter employed in connection with cisterns.

A float guide 7 is carried by the lower end of pipe 3 and depends intothe barrel 1 being here shown in the form of a stirrup 1922. Serial No.573,517.

having a cross brace 8 through which a rod 9 extends said brace beingsecured at its lower end to the stirrup 7. The stirrup 7 is showngreater in diameter than the pipe 3 so that the floatlO which moves upand down with the rod 9 may be larger than the lower end of said pipe 3in order to close said pipe end when the water in the barrel reaches apredetermined height. The rod 9 extends up into the pipe 3 and carriesat its upper end another float 11 which when the float 1O closes thelower end of pipe 3 is positioned adjacent the screened entrance to theoverflow or branch in the pipe 4.

The lower end of pipe 3 may extend into the barrel 1 any desired depth,but is preferably entered for about one inch, more or less. The float 10when the barrel is empty, or partly empty rests on the brace or crossbar 8 below the end of pipe 3' so as to afford suflicient space forwater entering through pipe 3 to pass into barrel 1.

In the use of this filter, the rain water running from the roof passesthrough pipe 3 into barrel 1 and carries with it all dust, dirt, sootand the like. which is washed from the roof by the first water passingthereover. 'When the barrel becomes full or nearly so, the float 10rises carrying with it rod 9 until the float contacts with the lower endof pipe 3 and closes said end. The float 11 simultaneously rises in pipe3 until. it reaches a point near the outlet from said pipe 3 into theoverflow pipe 4. The screen wire 5 which is placed over the entrance ofpipe 4: prevents any sediment or foreign matter entering said pipe 4%.water rises in the barrel sufficiently to close the lower end of pipe 3it will overflow into pipe 4: and pass thereth rough into the cisterndirect or into another filter not shown}.

It will thus be seen that this filter is designed primarily to preventthe passage of the wash water including foreign matter in the form ofsoot, dust and the like from entering the cistern so that pure rainwater only will pass to the cistern.

I claim 1. A filter of the class described comprising a closedcontainer. a pipe leading into said container and provided at its innerend with a stirrup shaped supporting member of a diameter greater thansaid pipe, a rod mounted in said support and extending into said pipe, afloat mounted on said rod within said stirrup for closing communicationAfter the 7 between the pipe and the container when the water in thecontainer reaches a prede termined point, a float in said pipe carriedby said rod and a branch pipe leading from said main pipe at a pointabove the upper limit of the float mounted in the pipe.

2. A filter of the class described oomprising a closed container havinga sediment discharge cook at its, lower end, a pipe leading into saidcontainer and designed to be connected with a down spout, a stirrupshaped member depending from the lower end of said pipe into saidcontainer and having a cross bar arranged therein, a rod carried by saidstirrup and extending through said cross bar into said pipe, a pair offloats mounted on said rod one within the pipe and the other outside thelower end thereof, the lower float being larger than the pipe to adaptit to close the end 20 In testimony that I claim the foregoing 25 as myown, I have hereto aiiixed my signature in the presence of twowitnesses.

WILLIAM A. PEN DERGRAFT.

lVitnesses E. FLANIGAN, LILLIE I'IANMER.

